

Not likely enough surface area for cyanoacrylate to do its magic, though one could try to glue the key pieces together and hope it holds long enough for a partial pull. Likely to just glue the broken piece in there by accident.
Hot glue is gooey and will grab the broken part.
Can confirm, I live out in the countryside with only coax available, and a measly 1Gbit down 150Mbit up and 9 - 11ms ping. No caps.
Wait, that’s awesome and steady and reliable. Expensive sure but with heavy multiperson usage and no noticeable issues, I am wondering WTF you’re on about unless it’s some weird edge case?
Maybe you are referring to predatory business practices like oversubscribed lines? That’s not a technical problem.